*{
  margin: 0;
  padding: 0;
  text-decoration: none;
  list-style: none;
}
body{
  background-color: #ccc;
}
.w{
  width: 1200px;
  margin: 0 auto;
}
.slide{
  position: relative;
}
.left{
  width: 200px;
  background-color: #fff;
  position: absolute;
}
li{
  height: 30px;
  line-height: 30px;
  padding-left:10px;
}
li.active{
  background: rgba(153,153,153,0.657)
}
a{
  color:#666;
  font-size: 14px;
}
a:hover{
  color: red;
}
.right{
  position: absolute;
  left: 200px;
}
.item{
  border-left: 1px solid #eee;
  display: none;
}
